import java.util.Scanner;
public class If03 {
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		System.out.println("请输入信用分");
		int score = scanner.nextInt();
		if(score >=1 && score <= 100){
			if(score == 100){
				System.out.println("信用良好");
			}else if(score > 80){
				System.out.println("信用优秀");
			}else if(score >= 60){
				System.out.println("信用合格");
			}else{
				System.out.println("信用不合格");
			}
		}else{
			System.out.println("输入错误");
		}
	}
}